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"use strict";
const h = require("highland");
const fs = require("fs");
const rheo = require("rheo");
const indent = require("indent-string");
const PassThrough = require("stream").PassThrough;
const toLines = string =>
string.split("\n").map((s, i, arr) => (i === arr.length - 1 ? s : s + "\n"));
const getTemplate = name =>
fs.readFileSync(`${__dirname}/templates/${name}.html`, "utf8");
const findMain = /^(\s+)<main/m;
const baseIndentLevel = findMain.exec(getTemplate("layout"))[1].length;
const postIndentLevel =
baseIndentLevel + findMain.exec(getTemplate("post"))[1].length;
function indentForTemplate(text, indentLevel) {
return indent(text, indentLevel).slice(indentLevel).replace(/\n+$/, "");
}
function templateReader(template, indentLevel) {
const content = toLines(
indentForTemplate(getTemplate(template), indentLevel)
);
return () => h(content);
}
function prependDoctype(stream) {
return h(["<!DOCTYPE html>"]).concat(stream).pipe(new PassThrough());
}
const templates = {
layout: templateReader("layout"),
home: templateReader("home", baseIndentLevel),
post: templateReader("post", baseIndentLevel),
taxon: templateReader("taxon", baseIndentLevel)
};
function setTitle(siteTitle, pageTitle) {
return rheo.template(function(s) {
return s
.inner("title", rheo((pageTitle ? " · " : "") + siteTitle))
.inner("body header h1", rheo(siteTitle));
});
}
function renderPostListItem(ctx) {
return function(template, [, post]) {
return template
.attribute("a", "href", () => ctx.getURL("post", post.basename))
.inner("a", () => rheo(post.data.get("title")));
};
}
function showPage(name) {
return function(els) {
return rheo(templates[name]());
};
}
module.exports = {
baseIndentLevel,
postIndentLevel,
indentForTemplate,
home(ctx, config, postsStream) {
ctx.type = "html";
ctx.body = prependDoctype(
templates
.layout()
.pipe(rheo())
.outer("main", showPage("home"))
.inner(".posts", function(postsTemplate) {
return postsStream.pipe(postsTemplate.map(renderPostListItem(ctx)));
})
.pipe(setTitle(config.site.title))
.render()
);
},
post(ctx, config, post) {
ctx.type = "html";
ctx.body = prependDoctype(
templates
.layout()
.pipe(rheo())
.outer("main", showPage("post"))
.inner("article h1", rheo(post.data.get("title")))
.outer("article main", rheo(post.body))
.pipe(setTitle(config.site.title, post.data.get("title")))
.render()
);
},
taxon(ctx, config, taxonItems) {
ctx.type = "html";
ctx.body = prependDoctype(
templates
.layout()
.pipe(rheo())
.outer("main", showPage("taxon"))
.inner("h1", rheo(config.site.title))
.inner(".posts", function(postsTemplate) {
return taxonItems.pipe(postsTemplate.map(renderPostListItem(ctx)));
})
.pipe(setTitle(config.site.title))
.render()
);
}
};
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